Journal-box.



cierren.

nomini-BX.

mereces. I

i of lloumlbruoli, in the county-of Somerset 'Sectional View through i"ig; I.

and State of New Jersey, have inventcdcertain ne. and useful Improvemente in Journal-Boxes, of which thc following is a full, clear, and exact description, whereby any one skilled in thciart may make und use the Same.

The .invention relates to journal bonev or bearings and is more particular-lj@y dire ed to a journal lio); or bearing of the self-lumicating type, that is, one which does not require oiling but. which, being composed of metal interspersed with a lubricating material provides for the constant lubrication.

of the metal parts.

It relates eescntiallyto ajournal' box bearing)r either of solid or split fconssruetian formed from metal and having its bearing surface broken by a series of depressions which provide holders-and dlstributers Afor the lubricating; material which forms' au;

essential part of the structure.

l The object of the invention is to provide a. bearing surface of metal and lubricant so disposed that the` metal. parts will always receive'lubrication even upon slightoscillir tion of tlie bearing parts.

A- further object is to provide struts or still'encrs longitudinally ofv the bearing to prevent upsetting or compression of thc metal such als would tend to expel the lubricant.

Referring to the drawings: Figure. l is a view in side elevation of a. cere upon which Vthe bearing shell is forincd. Fig". 2 is a top plan view of thecore illustrated in Fig. 1. Fig. 3 illustrates a modified arrangement oi' the longitudinal stifeners and is -a View of the core of. Fig. 'l showing,r cutaway portions tovform the Stifcncr. l! ig. 4 a cross- Fg. 5 is a crossscctional View through Fig. 3. Fig. 5 is a longitudinal Section through a bearing formed on the core or Figs. l, 2 and 4. Fig. 7 is a development of `the corcoif Fig. 1 to illustrato the positionz o-thc spiral thrczulini.r of the core or grooves of the bearing. Figll is a. similar development-of pox-lion of the. corr ofl `ig.3.

lt has not been Van uncommon practice to form self-.lubricating bearings from "metal with inserted graphit-c or izoinpcsition see- Spccicatioa of Letersletent.

i the bearing.

Pai cntcd July 4,191.6. ff

Application lcd July 25, 19N. Serial No. 781.141).

ions so disposed as to form a lubricant for' The holders for the lubricant havfeibccii I arranged in a great variety of forms but in order to eure suliicicn't lubricating ifualio ties, the metallic portion ofthe bearing been greatly weakened by cutting'it tn prcri-fle ljiolders for the lubricant.

In a co-pending application Serial scribed a very efficient forni of self" il eating bearing:r haringgrooves ofh `bone type. arranged in oppositehalvis ofthe hearing box and opposed in their spir' Idilrection so thatul'ion one half ofthe bec 70 the herring-bones lie in one directionf'and in Imrallclism while in the 'Aothclfliiilfth'cyi permits an arrangement of 'struts' longil tudinallp of the bearing and the grooves off its surface which =will act as :L s, f Such a stifle-ncl.' is found to bc ver), essen f90 tial, particul-f-.i-ll in thin n'ietall'bearingsV where a xnaxin'uun of wearing quality is'v'del si'red with a minimum of thickness. thickness is meant the. difference iirdliaihctci' between the interior bore and 'ca :ternalliriishi-l surface of the bcarinf. i To beat illustrate 'the invention, (aires are shown upon which the bwu'infls are formi-RL b v casting". although in Fig. (3 thereis illusf` Y tinted a half" :section of a coniplete bearinf'.

in the :ic-scaupmiying drawings, tho-nuQ- mein-:.1 lili-.notes the. faire center which has disposed in parallelisml upon its surfacca series of ribal 9,. "lhcse, as illustrated,` are of suluslnntally herring-bone typefand eX'- "ui from une side. of the core to. a vpoint in-.ti'icaliy opposimef"V la ta zii-pcs'ite side of the eorelr 'i rar W' it similar series of ribs 3 but their l (L t o: curvature yis opposed, Ato that Il@ ics `of the core.

can:

ot' the rihs Frein this it apparent that there is no spiral rih which extends in one direction more than 90o ahout the periphery "lalie, for instance, the rib (i of F l an'd 2 in connection with the development illustrated in Fig'. T. lt starts at a point u just at one side of the center oi' the core and extends in a spiral direction to o? a distance oiL approxiniately 90" about the core. then reverses and terminates at (L3 just short ot the center of the core at i800 of its circumference. Opposed to this over the opposite half of the core, is the rib which starts at the point curves in a reverse spiral direction from that followed hy the ril; at the points It, o, to a point niidway between D1 and L. and then reverses through a distance of 'D02 terminating atthe point i.

The rihs on opposite halves otl the hearing, as .illustrated in Figs. 1.9 and l, are not continuous hut are broken on diainetrically opposite sides oil the core as illustrated at 4l so that upon the coro there is ay space ex tending' irorn end to end of the coro between the adjacent ends of the spiral herring-bone rihs. These spaces are preferahlv arranged h v leaving an oi'iening between the adjacent ends oi' the rihs on opposite sides of the core which openings are somewhat staggered in each ot' the succeeding hei-ringtone ribs.

When cast, the openings in conjunction with the ribsy 'form a continuous siaggered torni of column or support extending from end to end of the hearing, the metal` when cast. of course filling: the openings. By this arrangement there is a maximum an'iount of inet-al lett in the hearing and as there is an unbroken metal sui-iaccextending from end to end of the imm-ing, there is no liability7 in driving the hearings into place, ot upsetting the metal about the grooves to such an extent as to expel the lubricating iiiaterial which is molded into the grooves and vulcanized therein.

1f desired, openings may he provided through the rihs at every 90 of the circuni^ ference of the core as illustrated in Figs. 3 and S and Where it is necessary to provide a bearing in which the walls of the metal portion of the hearing are comparatively thin, Ait is important to use a structure of this form.

It will he observed that the openings between the succeeding ribs of any series are slightly odset with reference to each other so that upon a partial rotation of the shaft in the hearing, the lubricant will he car ied over every intermediate surface ol the metal.

Referring to Fig. (3 it will he noted that between the inside surface 5 and the eXte rior 6 of the hearing, there is a compara,- tively thin shell or metal and when this is weakened by forming grooves in the interior, the strength is materially diminished. Ot' course, there is all suilicient strength 'for sustaining the eight of the shafts when the hearing in place hut it is often quite esscntial that the hearings he driven into a hearing` socket and if they are of comparatively thin construction there is liability of the metal crimping or coin pressing at the weakest point 7 adjacent to the bottoni of the grooves to such an extentthat the lubricant forced out. of its proper surface alineiuent with the interior nietallicsurface of the hearing.

The stiil'eners formed hy leaving vnieta] between the adjacentends of the grooves at diaiuetrically opposite sides of the hearing or each 300 lpro ide a continuous metallic stitl'ener of the full thickness equal to the different interior and exteriorv diameters' of the hearing hox and of course these stili eners extend from end to end thereof. lhey absolutely prevent compression and crimping oi." the metal of the hearing under any ordinary use. These stileners also have an additional feature ot advantage in that they provide a plurality of points and a weight-- sustaining surface which will prevent the shaft working away the graphite with which the grooves are filled. l

The exact pitch and formation of the spirals is or" course quite .immaterial as they may be arranged to suit the exigencies of any particular requirement. The nia-in purpose or' the invention is to provide grooves ot substantially spiral formation broken into short spirals extending only approximately 90@ about the surface of the hearing. It will he observed that parallelism is 1naintained between the grooves of any set for any 90 of surface but that there is a re versal in the direction of the spiral for every 90C whether the grooves terminate in the hody of the metal to form longitudinally arranged struts at each 9Go or at 1800.

W'hat l claim as my invention and desire to secure by Letters Patent is:

1. A-journal box consisting of an unbroken cylindrical shell having an interior series of lubricating grooves arranged in parallel spirals, said grooves being continuous for substantially 180o of the circumference of the journal hoi; though reversing their direction at 90C, and al lubricant lilling said grooves.

2. A journal box consisting of an unbroken cylindrical shell having interiorly arranged lubricating grooves arranged in a series of parallel spirals, said spirals reversing their direction at each 900, throughout the shell said spirals being separated at substantially diainetrically opposite sides of the hearingr by unbroken n'ietallic portions of the hearinf and a lubricant filling said grooves 3. journal box coin-natiin);4 of an unbroken cylindrical shell. harina interiorly arranged lubricating grooves arranged in versing their direction for each succeeding series in a spiral herring-bone formation, 90, said grooves being closed at each 90 the spiral direction of the grooves reversing point of reversal to provide continuous meat each 90 about the entire inner peri hery tallic supports from end to end of the bearof the bearing surface and a lubricant lling ing and a lubricating filling said grooves.

said grooves.. 6. A journal box consisting of an un- 4. A journal box consisting of an unbroken cylindrical shell having interiorly broken cylindrical shell having interiorly arranged lubricating grooves arranged in a arranged lubricating grooves arranged in plurality of sets of parallel spirals extendspiral herring-bone ormation, the series in ing substantially 90 about the bearing sura spiral direction of the several parallel face in lone direction and reversing their digrooves reversing at each 90 about the enrection for each succeeding 90, said grooves tire inner periphery of the bearing surface, being closed at each 180 to provide continkthe continuity of said grooves being broken nous metallic supports from end to end of `by inter osed metallic parts at each 180 vthe bearing and a lubricant filling said and a lu ricant filling said grooves. grooves. 5. A journal box consisting of an un- LEIGH s BACHE broken cylindrical shell having interior lubricatin grooves arranged in sets of paral- Witnesses: lel spira s extending substantially 90 about Gro. D. LEERALLEY,

the bearing surface in one direction and re- S. A. KING. 

